Получение ошибки при попытке создать таблицу

Question

Может кто-нибудь сказать мне, где проблема в сценарии? я пытаюсь создать таблицу.

CREATE TABLE  utbl_Players
  (
   PlayerID       INT                   NOT NULL IDENTITY(1,1),
   Username       NVARCHAR(10)          NOT NULL PRIMARY KEY,
   [Password]     NVARCHAR(10)          NOT NULL,
   [First Name]   NVARCHAR(20)          NOT NULL,
   [Last Name]    NVARCHAR(20)          NOT NULL,
   Adress         NVARCHAR(100)         NULL,
   [Country Name] NVARCHAR (20)         NOT NULL,
   [Email Adress] NVARCHAR (100) UNIQUE NOT NULL CHECK ( [Email Adress] LIKE '%@%'),
   Gender         NVARCHAR (10)         NULL,
   [Birth Date]   DATETIME              NOT NULL CHECK(YEAR(GETDATE())-YEAR( [Birth Date])>=18),


CONSTRAINT[FK_Country]  FOREIGN KEY ([Country Name]) REFERENCES utbl_Country ([Country Name]),
CONSTRAINT[FK_Gender]   FOREIGN KEY (Gender)         REFERENCES utbl_Gender  (Gender),
CONSTRAINT[FK_PlayerID] FOREIGN KEY (PlayerID)       REFERENCES utbl_Game_History(PlayerID),

)